[PATCH v3 00/19] Exynos SYSMMU (IOMMU) integration with DT and DMA-mapping subsystem

Sjoerd Simons
2014-12-02T09:59:26Z

Hey Marek, Inki,

On Wed, 2014-11-19 at 12:15 +0100, Marek Szyprowski wrote:
> Hello Everyone,
>
> This is another attempt to finally make Exynos SYSMMU driver fully
> integrated with DMA-mapping subsystem. The main change from previous
> version is a rebase onto latest "automatic DMA configuration for IOMMU
> masters" patches from Will Deacon.

Do you happen to know if anyone is working on iommu/dma-mapping patches
for Exynos 5 based on this patchset?

For some background to that question, We (re-)discovered yesterday that
the out-of-tree exynos-reference kernel iommu patches are required to
get HDMI out working on exynos 5 boards. The current situation in
mainline is rather broken, HDMI output without CONFIG_DRM_EXYNOS_IOMMU
results in just displaying stripes[0]. While turning on
CONFIG_DRM_EXYNOS_IOMMU causes a kernel oops at boot....

0: http://people.collabora.com/~sjoerd/14120001.jpg

--
Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Collabora Ltd.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/x-pkcs7-signature
Size: 6170 bytes
Desc: not available
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20141202/a29ad0cc/attachment-0001.bin>